Definition of NUCLEUS

noun : NUCLEUS

Source: WordNet 3.1

  • 2. (

    ) the positively charged dense center of an atom ;

  • 3. (

    ) a small group of indispensable persons or things; "five periodicals make up the core of their publishing program" ;

  • 4. (

    ) (astronomy) the center of the head of a comet; consists of small solid particles of ice and frozen gas that vaporizes on approaching the sun to form the coma and tail ;

  • 5. (

    ) any histologically identifiable mass of neural cell bodies in the brain or spinal cord ;


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